Lock.



J. M. WRIGHT. LOCK.

APPLICATION FILED AUG. 8, 1912.

1, 1 1 3,858. Patented 001. 13, 1914.

THE NORRIS PETERS CO.. PHOTO'LITHU.. WASHINGTON. D, C.

UNITED STATES; PATENT oEEIoE.

".JAMEs ivi. WEIGHT, or KEOKUK, IOWA.

LOCK.

spe'evincation of Letters Patent.

Patentea'oet. 13,` 1914.

Application mea August 8.191,2. serial No. 714,132.

To all whom it may concern:

Be it known that I, JAMEs M. WRIGHT, a citizen of the United States of America, residing at Keokuk, in the county of Lee, Iowa, have invented certain new and usefulv Improvements in Locks, of which the following is a specication. i

The present invention appertains generally to locks, and aims to provide a novel i and improved device of that character.

One of the objects of the present invention is to provide a lock including atumblerbolt of novel construction, in order that it., may be manipulated to projected andretracted positions by means of a proper key, the tum-l bler bolt and lock case having coperating means for holding the tumbler bolt in'either" of said positions. l

Another object of the'present invention is to provide` device of the nature indicated, wherein a plurality of the tumbler bolts may be employed in order that the re` spective tumbler bolts may be independently actuatedby suitable selective keys, and'in order that all of the tumbler` bolts j mayy be simultaneously operated by a master key.`

A further `object of the present invention' is to provide a lock which will be simple and inexpensive in construction as well as sim-k ple and efficient in its use.` j l TWith the foregoing and general` objects outlined and with other objects 1in view, which will be apparent asthe nature of the `invention is better understood, the present i1ivention..resicles in the combinationand arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changesin the j precise embodiment of the invention` herein disclosed can be made withinxthe scope of what is claimed without. departing from the spirit 'of the inve'ntitm.` i. `The invention has been illustratedin its preferred embodiments in the accompanying drawings, wherein J Figure 1 is a fragmental side elevation of "7, Sand 9 are fragmental side elevations of the keys for manipulatingthe tumbler bolts.I

In Figs. lqand 2 thereis illustrated, a lock case. 1 .wlii`ch maybe of the mortise type, to be adapted to it within a mortise 'forinediin thetedge` of a. door, or the like.

Disposed between the side plates of the case l are a pair of lock` bolts 2 which are dise` posed snugly sidel byl side and which have their heads orouterends engaging loosely through `the @face of the case, in order t0 mount the lockbolts to allow sliding` and oscillatory movements, the tails or inner ends of thebolts being adapted to be swung vertically. `Eachof the bolts 2 is provided with an H-shapedgate forming opening 3 intermediate its ends, the openings 3 of the bolts registering with each other and having a `fence pin or lugl 4. passing there' through, the lug or pin t being attached to oneyor both side plates of the case. Although the inner ends or tails of the lock lbolts will fall `by gravity, the depression of the bolts is facilitated by means of a lea-f spring or springs 5 disposed above the bolts and carried by lugs 6 formed on the interior of the case, the free end or ends of the spring or springs 5 bearing upon the backs or upper edges of the boltsftodepress them.

Flach ofthe lock bolts isprovided with a lowerrecess or notch adjoining its tail or inner end,and forming `a talon having the curved walls 141 and 15. Each of the bolts is also provided with a transverse bore 10 directly above the talon, and which opens into the talon.v The bore l() forms a key .gap or seat lying within the sweep of the keyibit and arranged to engagethe free end of the key bit. The walls 4or shoulders let-15 of each talony are connected by a Wb 9. j g g t i In Fig. 9, there` is illustrated a master key, which hasia bit a `offa Vwidth approximately equalto the aggregate thickness of the lockbolts, `and which is provided with notchesjor clefts in its free corners to engage thewebs of the bolts.

In Figs. 7 and 8 are illustrated a pair of companionor mate selective keys, each of which embodies a half bit b or 0, respectively, which are `adapted to operate the respective lock bolts. Each bit Z2 and 0 has a single notch `or cleft.

In practice, when the lock bolts are retracted, the 'upper outer notches formed by the openings 3 are engaged over the fence lug or pin 4, so as to ordinarily prevent the. lock bolts 'from being shot or. projected, the` spring or springs serving to retain the lock bolts in depressed position. When the master key is inserted into the proper key hole.l providedk inthe side ofthe case and when yboreslO, the `notches of thev bit a engaging the respective webs 9'. Then, when the bit et the key is turned over theaxisof thel rshank oi?" the key, the notches oi the bit will engage the webs 9,to cause' the inner' ends of thek lock bolts to be swung upwardly, a's indicated by the .dotted lineA 18" `inFig.- l, and the' bit engaging within the key gaps orso'ckets 10 will cause the bolts to-be shot or' projected outwardly, the webs 9 andnotches `of the key bit being of such proportions that the bolts will just be liftedv sufficiently to perniit the centralv contracted portions or gates of the openings 3 to pass over the fence lug i v or pin 4. lhen the key has been completely rotated, soy as to be withdrawn from the case, the bolts will be pi'"ojectedv so asy to engage the keeper l (not shown) of the door jamb, the upper inner vnotches provided bythe openings -8 engaging over the' fence lug or pin to .prevent the bolts from being accikeeper. When either of the supplemental or selective keys is inserted into the case, the

Thus, the supplemental keys may be'given to two different persons, order that` the 'sucessive insertions of the two: supplemental keys will be'i'iecessary to shooter retracty '-botli of the bolts, as willr be apparent. The

advantages of such an arrangement will be clearly obvious, it being noted `that'both of the lock bolts maybe simultaneously oper-l ated by means of the masteri' key,v without the assistance or" the supplemental keys.

It will be? app arent that any-number of the improved tumbler` bolts may be employed in one lock,- iii order that :theseveralbolts may be actuated by independent selective keys, andv inoidertlfiat 'all of the `bolts maybe actuated simultaneousl'yby master key. It desired, a single Alock bolt may be eina single-key..y

TheiH-shaped'openings'are of such proportions, that when the inner endsl or tails ployed, which necessitates lthe use cifonly of the lock bolts are raised by the notchesot the Ykey `bitsl engaging the webs 9, the central contracted portions or gates of the openings 3 will'aline with-the fence lug or `pin 4, to permitthe bolts/to be shot vor retracted.- This prevents the lock bolts-from 'various intermediate positions. 'tion-s inthe webs will also necessitate corre- .beingoperated by false keys, inasmuch as .y the insufficient. or excessive upward or downward movement of the lock bolts, would prevent them Jrom being slid outwardly and inwardly, as will be apparent.

v number of key changes may be provided by positioning the webs 9 at various points between"V the sides of the respective lock bolts, and by increasing and decreasing the proportions of the webs and notches of the key bits. Thus, a's illustrated in Fig. 5, the web 9 nia'y be disposed intermediatethe sides of the lock bolts, thewebs oi' the lock bolts illustrated in Fig. 2, being disposed at the outer sides of the lock bolts, although they may be disposed on the inner sides or at The variasponding changes iii the notches oi the key bits. The dotted line 11 in'Fig. 3 illustrates how the web 9 may be cut away, and the dotted lineslZ, illustrate how the web may be extended, to necessitate various keys. It will also be apparent that the webs 9 may be yoit Avarious thicknesses, they being of less thic'ikness than the thickness of the lock bolts.

ln the form illustrated in Fig. 6, the case rlis ofsuch construction, as to be secured to the -side or face of adoor, the inner end. or tail 17 of the -lock bolt being extended through a vertically elongated slot provided in the back of the case, to permit the dentally retracted or disengaged from the proper oscillation or verticalniovement of the lock bolt. Otherwise, the modified form embodies general features abovey discussed.

same will only serve to manipulate one of the' bolts inthe manner above indicated.;

Having thus described the invention, what is claimed` as 4'new is 1. In a lock, a'bolt", means for mounting 1thesnine'for sliding and oscillatory movements and for locking the same against slid- `ing movements unless swung to a predetermined position', the bolt having a talon Aprovided withl a lkey gap, and a web cennecting the talon walls,- i'n combination with za keyfhaving a bit arranged tov engage the ke'yg'ap for imparting a sliding movement to'the bolt,'and having acleft -to engage lthe web for 'swinging the bolt `to sliding position.-

2. In a lock, a'case including a face plate,

'a' lock bolt mounted for sliding and oscillatory vmovements through the face plate,

means for locking the bolt against sliding jmoveinents unless swung to a predetermined position, the lock boltl having a talon proi'fidedffwith a fkey gap and a web connecting A the talon lwalls, in combination with a key "having a" bit arranged to engage the key gafp for imparting a sliding movement to ythe bolt, and having a cleft to engage kthe 'said web for swinging'the bolt to sliding Aposition 3. In a-lock,-a plurality of juxtaposed bolts, meansfor mounting the saine for slideach having a bit arranged to engage the key gap of one bolt, the key bits having clefts to engage the webs of the respective bolts for swinging the bolts to sliding positions. l

il. In a lock a case including a face plate, a plurality or lock bolts arranged side by side and mounted for sliding and oscillatory movements through the `face plate, means for locking the bolts against sliding move` ments unless swung to predetermined positions, each bolt having a talon provided with a key gap, and a web connecting the talon walls, in combination with a master key having a bit arranged to engage the key gaps of all the bolts to impart a sliding movement to the bolts, and selective y keys each having a bit arranged to engage the key gap of one bolt to impart a sliding movement thereto, the key bits having clefts to engage the respective webs for swinging the boltsto sliding positions.

5. In a lock, a case, a bolt therein, means for mounting the bolt for sliding and oscillatory movements, and including a coperating fence and gate carried by the case and bolt, the :fence and gate locking the bolt against sliding movements unless swung to a predetermined position, the bolt having a talon provided with a key gap and a web `conneotingthe talon walls, theiweb being narrower than the bolt and being disposed between the sides thereof, in combination with a key having a bit arranged to engage the key gap of the bolt for .imparting a sliding movement to the bolt and having a cleft arranged to engage the said` web for swinging the bolt to sliding position.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. y

\ JAMES M. WRIGHT.

Witnesses:

LAURANGE W. PARSONS,` FRANK ANDERSON.

Copies of this patent may be obtained for nve cents each, by addressing the "Commissioner of vPatents,

Washington, D. C. 

